Combination lock



Mm. zo, 1923.

1,475,033 H` xMBoL COMBNATON 'LK Filed Jun@ El l A TTORNE Y Patented Nov. 2Q, 1923.

HARRY SMBOL, OF EDIJIONTON, ALBERTA, C fllsDl, ASSIGNOR F COMBNTICN 100K.

appneatieneied ruse a,

To all whom t may concern.'

Be it known that I, HARRY Snuon, a citi zen of Ukraine, formerly part of Russia, residing at Edmonton, Province of Jrlberta, and Dominion of Canada, have invented certain new and useful lmprovements in Combination Locks, of which the following is a specification.

The present invention relates to improvements in combination locks, and it is the principal object of the invention to provide a lock of this type in which the successive operations of a knob and disc for' properly setting the combination, impart to the locking bolt a step by step opening motion.

A further object of the invention kis the provision of a safe lock of this character which is extremely simple and therefore in expensive in its construction, but nevertheless performs positively and with great aecuracy all task of complicated combination locks providing an equal amount of security.

Another object of the invention is the provision of a lock of this character which may also be used as a box lock or the like.

These and other objects of my invention will become more fully apparent as the description thereof proceeds, and will then be specifically pointed out in the appended ao claim.

1n the accompanying drawing, forming a material part; of this disclosure,

Figure 1 is a front elevation of a combination lock constructed according to the present invention, after removal of part of the front cover to illustrate the interior arrangement.

Figure 2 is a longitudinal section through a combination lock according to the present 4o invention on line 2-2 of Figure 1.

Figurel 3 is a detail front view of a combination diSC.

Figure t is a rear view of this disc. Figure 5 is a cross-section through the disc on line 5 5 of Figure 3.

Figure 6 shows detail sectional views of the cam faces and operating pin, the section being taken on line 6-6 ofvFigure 3.

rThe lock comprises a casing 10 adapted to be secured to a door or the like by means of suitable fastening devices passed through holes 11 in corner brackets 12 within the casing. rlhe cover plate 13 of the casing carries in the customary manner a dial plate 14, and a spindlel carrying at its front i922. serial ne. 565,34@

end an operating knob 18 is passed through said dial plate and the front wall of the casing into a sleeve 17 vprovided with a screw threaded rear part 18, while apin 19 screwed with its front end into spindle 15, passed through sleeve l? and part 18 and ends at its rear endinto screw-head 2O einbedded into the rear wall of the casing.

`The threaded part 18 engages two spaced plates and 22 for nolding in the space between these plates, a disc 23 of a construction which shall presently be described in detail.

@n its front face this disc, as illustrated in Figure 3, is provided with a plurality of ridges 2a forming grooves 25 in which cam lugs or abutments 26, 26 are arranged which are pressed from the rear ofthe disc to the front by means of springs 2T secured at one of their ends by means of screws 28 to the rear of the disc and having their oppositey end extending across openings 29 in the disc for a purpose hereafter to be more fully described.

V he locking bolt 30 of the lock is adapted to slide in and out of the casing through a suitable opening in its end wall, and provided with a longitudinal groove 31 in which plays one end of a rod 32 secured with its 0pposite end to a transverse plate 33 of the lock casing as indicated at 3d.

A spring 35 is wound around the rod 32 between the rear edge of bolt 30 and the plate 33, and this spring has the tendency to press the bolt outwardly.

Into the rear edge of bolt 30 are also screwed the ends of two bars 36 and 37 carrying a block 38 intermediate their ends normally resting against the inner face of plate 33, and the outerv ends of these bars are mo-vably guided in a transverse block 39.

A pin 40 is arranged in block 38 adapted to travel with said block 38 in a manner more fully to be described hereafter.

The cover plate 13 carries at its front the 100 usual mark 41 for enabling the proper setting of the combination.

The device described so far operates in the following manner:

Upon the rotation of knob 16 in order to 105 bring successively the proper combination numbers in line with the mark L11 on cover 13, the disc 23 will be rotated'to bring the proper combination number on dial 14: into alignment with the mark during which op- 110,

f direction by the corresponding operation of lmob 16, the pin will engage the cam shoulder 2G `in this groove 25 and will depress the same and slide along its rear edge into groove 25 to avoid ridge 24J- and take up the position indicated at 43, indicated by the second number of the combination.

It new the knob 16 and dial 14; as well as disc are turned again in opposite direction, the pin 40 will engage abutment 26 and depress the same against the action of l its spring and slide along its rear edge to another ridge 24, in order to take up the position indicated at L14 and represented by the last number of the combina-tion.

kDuring the step by step movement of the pin 40, the blocl: 38 will move towards the left and will taire along the bolt 3() to open the lock. If now the disc 27 is turned for 90o in either direction, the pinA will slide back into its old position under the actionY ot' spring and the lock will be locked again.

From Figure 3, it will be seen that two sets of'grooves and ridges 25 and 24 are provided, one at eachi side of the center line ot the disc. One combination is worked at a time and the other is made idle by a corresponding adjustment of spring lsoi that its block 46 engages the corresponding spring plate 27 to lock its cam block into unyielding position.

vWhat l. claim as new and desire to secure by Letters Patent of the United Stat-es isn 'a combination lock ofy the class `described, a. disc adapted to be operated by the combination lock knob, a plurality ot open grooves, and ridges forming said grooves on saidV disc, said grooves and ridges arranged in two sets each pro-vided with cam abutments, and means for vieildingly supporting said abut-ments, means ror locking one of thc sets of grooves and ridges against operation, and a lockA bolt adapted to be normally pressed. into locking position, a pinconnected withv said bolt adapted to alternately engage said abutments to slide from a groove across an adjoining ridge into the adjoining groove and along its bottom and to engage the top of theabutment on. the next adjoining ridg e to, depress the same upon the rotationv of said disc in one and the other direction toisuccessively set the combination.

In testimony whereof I have affixed my signature. n

HARRY SIMBOL. Titnessc ALFRED GRANT. 

